Raising the light wells as a precaution against flooding?

In my community, it was recommended to raise the light wells if necessary so that in the event of heavy rain, no water can enter the basement. What do you think about that? Although I do not live directly in a flood area, who knows how it will look in a few years.

You can't say that in general terms. There are far too many factors involved to derive the correct measure. If the GOK of my property is 2m higher than those of the surrounding properties, I have fewer problems with surface water than my neighbors. Even if the soil allows for quick infiltration, this is advantageous. With soil where pressing groundwater is to be expected, raising it is not enough, because then the water comes not from above but from below and from the sides into the light well.

Theoretically, you can also initially have the light well finished flush with the GOK. If you later become concerned, there are (at least with ACO) extensions that can be placed on the light well.

If you have concerns, I would have your on-site conditions checked by an expert or a TGA planner so that the measures relevant to your house can be derived.

The higher the better. And to provide the water with ways to run off the property.

If the house is really at risk, I would rather seal the basement windows with glass blocks and provide additional forced ventilation for the basement rooms. That of course only helps with minor flooding and if the entrance is elevated. Veranda door?? The basement entrance can possibly be secured with a fire protection steel door (with sealing lips). But at water levels like, for example, at the Ahr a few weeks ago, there is probably no solution.

Let the terrain around the house consistently slope slightly away from the house. Then, as already mentioned, direct the water’s flow. Remember that during heavy rain, street drains [Straßengullys] do not absorb water but overflow and can become a problem for you.

It can’t hurt to follow the community recommendation. Furthermore, I would consult a professional – my first point of contact would be [EU-Copernicus], within that [EFAS], and from there I would work my way to my region.